Adapting Generator Load?

When the batteries (large ones like automotive) are low, they are almost like a short circuit. What you need is something to limit the current. I would suggest using a light like an automobile head lamp) that consumes less than the 5Amps. Should be easy to find Connect the light in series with the generator. At first the light will be bright and vanish as the battery is getting near full charge. Hope this answers your question

It is simple and inexpensive. A switch and a series of 10 amp diodes that can be switched in series with the batteries. As the voltage drop across the diodes is increased, the charging current will go down. A meter in the circuit would be nice but a few charging times will give the experience without a series ammeter. A meter from a junk yard might not be too expensive and the diodes could be had from an alternater repair shop as used. A little trickier circuit would be to use a used regulator card from an alternator rebuild shop. The variable voltage that is applied to the field in the alternator could be set to deliver whatever current you need to charge your batteries.

You need a resistor in series with the battery and the generator, the value must be large enough to limit the current drawn by the batteries to less than 5.3A and have a power rating large enough to take the load. A good resistor could be made from an old electric fire element with a tapping at the appropriate point along its length, use a hose clip to hold the wire in place. Now connect an ammeter and experiment.

It is simple and inexpensive. A switch and a series of 10 amp diodes that can be switched in series with the batteries. As the voltage drop across the diodes is increased, the charging current will go down. A meter in the circuit would be nice but a few charging times will give the experience without a series ammeter. A meter from a junk yard might not be too expensive and the diodes could be had from an alternater repair shop as used. A little trickier circuit would be to use a used regulator card from an alternator rebuild shop. The variable voltage that is applied to the field in the alternator could be set to deliver whatever current you need to charge your batteries.

You need a resistor in series with the battery and the generator, the value must be large enough to limit the current drawn by the batteries to less than 5.3A and have a power rating large enough to take the load. A good resistor could be made from an old electric fire element with a tapping at the appropriate point along its length, use a hose clip to hold the wire in place. Now connect an ammeter and experiment.